Source material powering Anthropic's Claude Code leaked for the second time in just over a year, publicly exposing the AI coding tool's full architecture, unreleased features and internal model performance data.

Anthropic PBC inadvertently released internal source code behind its popular artificial intelligence-powered Claude coding assistant, raising questions about the security of an AI model developer that...

An internal-use file mistakenly included in a software update pointed to an archive containing nearly 2,000 files and 500,000 lines of code, which were quickly copied to developer platform GitHub.